From: "Damian Yerrick" <NOSP AT Musenet@pineight.8m.com>
Newsgroups: comp.os.msdos.djgpp
References: <7ua34.761$He DOT 5295 AT newsfeed DOT slurp DOT net> <82k6t7$fiu AT acp3bf DOT knirsch DOT de>
Subject: Re: Memory Mapping and Libcurses support in DJGPP? (newbie question)
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Organization: Pin Eight Software <http://pineight.8m.com/>
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NNTP-Posting-Date: Wed, 08 Dec 1999 02:01:48 GMT
Distribution: world
Date: Wed, 08 Dec 1999 02:01:48 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

"Hans-Bernhard Broeker" <broeker AT acp3bf DOT knirsch DOT de> wrote:
> Chris Fought (cfought AT systran DOT com) wrote:
>
> > malloc, creating buffers etc.). Once we have this step completed our
> > software simply creates a pointer to the location in the host's memory
where
> > our card's 'memory' exists.
>
> Look up FAQ paragraphs 18.4 and 18.7. You can *not* simply set up a
> pointer to your device memory, in protected mode. The 'protected' in
> that term is against it. From your requirement, I suspect you'll want
> to use the rather dangerous 'nearptr' method, but I'd advise against
> it.  You loose all the protection, that way, i.e. you're back to the
> state of raw DOS programming, where a single ill-written program could
> easily confuse DOS to horrible death. Literally.

So use farptr instead.


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